There is a funnell on top and a tube coming out the bottom. When we poured cold water in, the water came out purple. When we poured hot water in, it came out green.
2006-08-24 12:22:33 · 3 answers · asked by thebookthief23 2 in Science & Mathematics ➔ Physics
Probably thermotropic liquid crystals.
Crystals like this alter the absorption of red, green and blue light as it passes through them according to temperature changes.
They are used in such things a mood rings and thermometric devices. They can also be in liquid solutions which will also change colour with temperature.
Try these links for more info:
http://en.wikipedia.org/wiki/Liquid_crystal
http://home.howstuffworks.com/question443.htm
2006-08-24 15:54:12 · answer #1 · answered by Jay T 3 · 0⤊ 0⤋
What changes color with changes in temperature?
2006-08-24 12:58:31 · answer #2 · answered by STEVEN F 7 · 0⤊ 0⤋
It's Schrodinger's cat...and the question you need to be asking is this one - Is the cat dead or alive?
2006-08-24 12:28:22 · answer #3 · answered by young108west 5 · 0⤊ 1⤋